CN117305573A - Capsule type tension-magnetic field coupling annealing furnace based on Helmholtz coil - Google Patents
Capsule type tension-magnetic field coupling annealing furnace based on Helmholtz coil Download PDFInfo
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- CN117305573A CN117305573A CN202311621739.XA CN202311621739A CN117305573A CN 117305573 A CN117305573 A CN 117305573A CN 202311621739 A CN202311621739 A CN 202311621739A CN 117305573 A CN117305573 A CN 117305573A
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- 238000000137 annealing Methods 0.000 title claims abstract description 42
- 230000008878 coupling Effects 0.000 title claims abstract description 13
- 238000010168 coupling process Methods 0.000 title claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 13
- 239000002775 capsule Substances 0.000 title claims description 14
- 238000001816 cooling Methods 0.000 claims abstract description 110
- 238000010438 heat treatment Methods 0.000 claims abstract description 94
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 239000007963 capsule composition Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 9
- 239000010425 asbestos Substances 0.000 claims description 6
- 229910052895 riebeckite Inorganic materials 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 11
- 239000000956 alloy Substances 0.000 abstract description 11
- 239000002131 composite material Substances 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/564—Tension control
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15333—Amorphous metallic alloys, e.g. glassy metals containing nanocrystallites, e.g. obtained by annealing
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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The utility model provides a capsule formula tension-magnetic field coupling annealing stove based on helmholtz coil, belongs to heat treatment equipment technical field, solves current tension annealing stove and magnetic field annealing stove and can not carry out accurate control's technical problem according to amorphous alloy strip multistage heating mechanism, and this device includes unreeling device, heating furnace unit, coiling mechanism and cooling device, and the heating furnace unit is "one" font and arranges in proper order, and unreeling device sends the amorphous alloy ribbon after uncoiling into the heating furnace unit that is located the head end, sends into cooling device after a plurality of heating furnace units in proper order, and the amorphous alloy ribbon is reeled into the book through the coiling mechanism after being sent out by cooling device. The method can accurately control the amorphous alloy strip according to a multi-stage heating mechanism, solves the problems of annealing and cooling of the amorphous alloy strip, and can prepare the nanocrystalline magnetically soft alloy strip with excellent quality, thereby having wide popularization value.
Description
Technical Field
The invention belongs to the technical field of heat treatment equipment, and particularly relates to a capsule type tension-magnetic field coupling annealing furnace based on a Helmholtz coil.
Background
The nanocrystalline magnetically soft alloy is a magnetically soft alloy with a nanocrystalline structure obtained by heat treatment on the basis of amorphous alloy, and has more excellent magnetically soft performance. Due to the efficient preparation process and excellent material performance, amorphous alloys are gradually replacing traditional soft magnetic materials such as silicon steel, glass-mox alloy, ferrite and the like, and are increasingly applied to the fields of electric power, electronics, communication and the like. In recent years, the traditional soft magnetic material has difficulty in meeting the requirements of the development of the electronic and communication technologies towards high frequency, miniaturization and light weight, and the high-quality amorphous and nanocrystalline alloy ribbon has outstanding advantages compared with the traditional soft magnetic material, so the soft magnetic material becomes an important basic functional material, plays an important pushing and supporting role in the development of the high and new technology, and is a key material in the twenty-first-year information, biology, energy, environmental protection, space and high technical field.
The heat treatment process is particularly important for preparing the nanocrystalline magnetically soft alloy, and the magnetically soft alloy obtained by the traditional heat treatment mode has higher relative magnetic permeability and coercive force, so that the magnetically soft alloy also needs to be treated by a magnetic field furnace. Based on the method, expert students find that if the existing magnetic field annealing and tension annealing modes are combined, the tension force of the strip in the annealing process under the magnetic field condition is always kept at a certain value, and then the tension stability of the strip in the continuous heat treatment process is improved, and the nanocrystalline soft magnetic alloy strip with excellent quality is prepared.
However, in the process of performing tension annealing on an amorphous alloy strip in the prior art under the magnetic field condition, tension is usually established at the head end and the tail end of an annealing section of the continuous amorphous alloy strip, the middle part of the annealing section cannot be accurately detected and adjusted in real time, and the tension cannot be accurately controlled according to a multi-stage heating mechanism of the amorphous alloy strip, so that development of a tension-magnetic field coupling annealing furnace capable of accurately controlling annealing processes at each stage is needed.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art, solve the technical problem that the existing tension annealing furnace and magnetic field annealing furnace cannot be accurately controlled according to a multi-stage heating mechanism of an amorphous alloy strip, and provide a capsule type tension-magnetic field coupling annealing furnace based on a Helmholtz coil.
The invention is realized by the following technical scheme:
the utility model provides a capsule formula tension-magnetic field coupling annealing stove based on helmholtz coil, includes unreeling device, heating furnace unit, first helmholtz coil group, second helmholtz coil group, coiling mechanism and cooling device, wherein:
the heating furnace unit is of a hollow spherical cover body structure, a feed inlet and a discharge outlet are respectively arranged at two ends of any diameter of the cover body, the discharge outlet of the former heating furnace unit is communicated with the feed inlet of the latter heating furnace unit, the unreeling device sends the unreeled amorphous alloy thin strip into the heating furnace unit positioned at the head end, the amorphous alloy thin strip sequentially passes through a plurality of heating furnace units and then is sent into the cooling device, and the amorphous alloy thin strip is reeled into a roll by the winding device after being sent out by the cooling device;
in the heating furnace unit, a feeding roller is arranged at one side of a feed inlet, a tension fine-tuning roller is arranged at one side of a discharge outlet, an amorphous alloy thin strip is fed into the heating furnace unit through the feeding roller, and then is fed out of the heating furnace unit through the tension fine-tuning roller; the first Helmholtz coil group and the second Helmholtz coil group are respectively composed of two pairs of Helmholtz coils which are arranged in parallel along the vertical direction, wherein the Helmholtz coils which are oppositely arranged in the first Helmholtz coil group are respectively arranged at the head end and the tail end of an amorphous alloy thin belt in the heating furnace unit, and the magnetic field direction formed by the first Helmholtz coil group is parallel to the length direction of the belt; the second Helmholtz coil groups are oppositely arranged, the Helmholtz coils are respectively arranged at the front side and the rear side of the amorphous alloy thin strip in the heating furnace unit, and the magnetic field direction formed by the second Helmholtz coil groups is parallel to the width direction of the strip;
the lower part of the cooling device is provided with a water cooling area, the upper part of the cooling device is provided with an air cooling area, a heat insulation plate is arranged at the interface position of the juncture of the water cooling area and the air cooling area, a plurality of through grooves for the amorphous alloy thin strip to pass through are arranged on the heat insulation plate, and an air blowing port array is arranged on the side wall of the air cooling area part of the cooling device; a third guide roller and a fourth guide roller are arranged in the water cooling area, a first guide roller, a second guide roller and a conveying roller are arranged in the air cooling area, a tension adjusting roller is arranged between the first guide roller and the second guide roller, the head end and the tail end of the tension adjusting roller are arranged on a lifting device, the lifting device drives the tension adjusting roller to reciprocate up and down, and the tension of the amorphous alloy thin strip cooling stage in the cooling device is adjusted through the tension adjusting roller; the amorphous alloy ribbon penetrates through the through groove on the heat insulation plate in the cooling device and sequentially passes through the first guide roller, the third guide roller, the tension adjusting roller, the fourth guide roller and the second guide roller, and the cooled amorphous alloy ribbon is conveyed to the outside of the cooling device through the conveying roller.
Further, the tension-magnetic field coupling annealing furnace comprises at least two heating furnace units, and the heating furnace units are sequentially arranged in a shape like a Chinese character 'Yi' or a shape like a Chinese character 'S'.
Further, an asbestos heat preservation layer is paved on the inner side wall of the heating furnace unit, and a heating resistance wire is arranged between the inner side wall of the heating furnace unit and the asbestos heat preservation layer.
Further, the positions of the feed inlet and the discharge outlet of the heating furnace unit are provided with heat preservation covers.
Further, the first helmholtz coil group and the second helmholtz coil group are fixedly mounted on the inner side wall of the heating furnace unit through brackets, respectively, and the first helmholtz coil group and the second helmholtz coil group are perpendicular to each other but do not intersect.
Further, an air outlet is arranged on the top surface of the cooling device, and a cooling water outlet is arranged at the bottom of the side wall of the cooling device.
Further, according to the amorphous alloy ribbon cooling process parameters, the temperature and flow of cooling water in the water cooling area and the air outlet speed and temperature of the air outlet array in the air cooling area are adjusted, and the cooling rates of the water cooling area and the air cooling area are not more than 10 ℃/s. The amorphous alloy thin strip is repeatedly inserted between the water cooling area and the air cooling area for cooling, when the temperature of cooling water is the same as the air outlet temperature of the air outlet array, the cooling device can realize the stage (variable rate) continuous cooling of the amorphous alloy thin strip due to the different heat transfer efficiency of the cooling medium, but in order to avoid stress concentration, the cooling rate of the water cooling area and the air cooling area is not more than 10 ℃/s; the device can also adjust the temperature of cooling water to be different from the temperature of air outlet, so that the cooling rates of the water cooling area and the air cooling area are the same, and the amorphous alloy ribbon is continuously cooled at a constant rate.
Further, first speed sensors are respectively arranged at the positions of the unreeling device and the reeling device, the unreeling device, the reeling device and the first speed sensors are respectively and electrically connected with a PLC, and the PLC controls the rotating speeds of the unreeling device and the reeling device to be different according to feedback signals of the first speed sensors;
temperature sensors are respectively arranged in the heating furnace units, the temperature sensors and temperature control buttons of the heating furnace units are respectively and electrically connected with a PLC, and the PLC independently adjusts the heating temperature of each heating furnace unit in real time according to annealing process parameters of the amorphous alloy thin strip and feedback signals of the temperature sensors;
in the same heating furnace unit, a second speed sensor is arranged at the position of the feeding roller, a first tension sensor is arranged at the position of the tension fine adjustment roller, the feeding roller, the tension fine adjustment roller, the second speed sensor and the first tension sensor are respectively and electrically connected with a PLC, and the PLC adjusts the rotating speeds of the feeding roller and the tension fine adjustment roller in real time according to feedback signals of the second speed sensor and the first tension sensor;
in the cooling device, a second tension sensor is arranged at the position of the tension adjusting roller, the second tension sensor and the lifting device are respectively and electrically connected with a PLC, and the PLC adjusts the position of the tension adjusting roller in real time through the lifting device according to the feedback signal of the second tension sensor.
Further, the lifting device comprises upright posts which are respectively arranged on the front inner side wall and the rear inner side wall of the cooling device along the vertical direction, sliding grooves are respectively arranged on the opposite planes of the upright posts on the front side and the rear side, the screw rods are respectively arranged in the corresponding sliding grooves, the lower ends of the screw rods are provided with lifting motors, the screw rods are provided with sliding blocks, and the head end and the tail end of the tension adjusting roller are respectively fixedly arranged on the corresponding sliding blocks; the lifting motor is electrically connected with the PLC, the PLC controls the lifting motor to drive the screw rod to rotate forwards or reversely, the screw rod drives the sliding block to reciprocate along the sliding groove, and the sliding block drives the tension adjusting roller to reciprocate along the upright post.
The invention has the beneficial effects that:
according to the capsule type tension-magnetic field coupling annealing furnace based on the Helmholtz coil, the heating temperature, the magnetic field condition and the tension are independently adjusted in each heating furnace unit, so that an equipment foundation is provided for an amorphous alloy strip precise multi-stage annealing mechanism; on the basis, the strip is directly sent to a cooling device for air cooling and air cooling to be subjected to composite cooling, and the tension of the nanocrystalline magnetically soft alloy strip is further adjusted in the process of composite cooling.
In summary, the method can accurately control the amorphous alloy strip according to the multi-stage heating mechanism, and simultaneously solve the problems of annealing and cooling of the amorphous alloy strip, so that the nanocrystalline magnetically soft alloy strip with excellent quality is prepared, and the method has a wide popularization value.
Drawings
FIG. 1 is a schematic view of a front cross-sectional structure of the present invention;
fig. 2 is a schematic view showing a tension adjusting state of an amorphous alloy ribbon.
In the figure, 1 is an unreeling device, 2 is a heating furnace unit, 2-1 is a feed inlet, 2-2 is a discharge outlet, 3 is a feed roller, 4 is a first Helmholtz coil group, 5 is a second Helmholtz coil group, 6 is an amorphous alloy thin strip, 7 is a tension fine adjustment roller, 8 is a first guide roller, 9 is a blowing port array, 10 is a tension adjustment roller, 11 is a second guide roller, 12 is a third guide roller, 13 is a fourth guide roller, 14 is a conveying roller, 15 is a reeling device, 16 is a lifting device, and 17 is a heat insulation plate; i is a water cooling area, and II is an air cooling area.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
The capsule type tension-magnetic field coupling annealing furnace based on the Helmholtz coils as shown in fig. 1 and 2 comprises an unreeling device 1, a heating furnace unit 2, a first Helmholtz coil group 4, a second Helmholtz coil group 5, a reeling device 15 and a cooling device, wherein:
the heating furnace unit 2 is of a hollow spherical cover body structure, a feed inlet 2-1 and a discharge outlet 2-2 are respectively arranged at two ends of any diameter of the cover body, the discharge outlet 2-2 of the former heating furnace unit 2 is communicated with the feed inlet 2-1 of the latter heating furnace unit 2, the unreeling device 1 feeds the unreeled amorphous alloy thin strip 6 into the heating furnace unit 2 positioned at the head end, and the amorphous alloy thin strip 6 sequentially passes through a plurality of heating furnace units 2 and then is fed into the cooling device, and is reeled into a roll by the winding device 15 after being fed out by the cooling device;
in the heating furnace unit 2, a feed roller 3 is arranged at one side of a feed port 2-1, a tension fine adjustment roller 7 is arranged at one side of a discharge port 2-2, an amorphous alloy thin strip 6 is fed into the heating furnace unit 2 through the feed roller 3, and then is fed out of the heating furnace unit 2 through the tension fine adjustment roller 7; the first helmholtz coil set 4 and the second helmholtz coil set 5 are respectively composed of two pairs of helmholtz coils which are arranged in parallel along the vertical direction, wherein the helmholtz coils which are oppositely arranged in the first helmholtz coil set 4 are respectively arranged at the head end and the tail end of the amorphous alloy thin strip 6 in the heating furnace unit 2, and the magnetic field direction formed by the first helmholtz coil set 4 is parallel to the length direction of the strip; the second Helmholtz coil groups 5 are oppositely arranged, and the Helmholtz coils are respectively arranged at the front side and the rear side of the amorphous alloy thin strip 6 in the heating furnace unit 2, and the magnetic field direction formed by the second Helmholtz coil groups 5 is parallel to the width direction of the strip;
the lower part of the cooling device is provided with a water cooling area I, the upper part of the cooling device is provided with an air cooling area II, a heat insulation plate 17 is arranged at the interface position of the juncture of the water cooling area I and the air cooling area II, a plurality of through grooves for the amorphous alloy thin strip 6 to pass through are arranged on the heat insulation plate 17, and a blowing port array 9 is arranged on the side wall of the part of the cooling device in the air cooling area II; a third guide roller 12 and a fourth guide roller 13 are arranged in the water cooling area I, a first guide roller 8, a second guide roller 11 and a conveying roller 14 are arranged in the air cooling area II, a tension adjusting roller 10 is arranged between the first guide roller 8 and the second guide roller 11, the head end and the tail end of the tension adjusting roller 10 are arranged on a lifting device 16, the lifting device 16 drives the tension adjusting roller 10 to reciprocate up and down, and the tension of the amorphous alloy thin strip 6 in the cooling device in the cooling stage is adjusted through the tension adjusting roller 10; the amorphous alloy ribbon 6 passes through a through groove on the heat insulation plate 17 in the cooling device and sequentially passes through the first guide roller 8, the third guide roller 12, the tension adjusting roller 10, the fourth guide roller 13 and the second guide roller 11, and the cooled amorphous alloy ribbon 6 is conveyed to the outside of the cooling device through the conveying roller 14.
Further, the tension-magnetic field coupling annealing furnace comprises at least two heating furnace units 2, and the heating furnace units 2 are sequentially arranged in a shape of a straight line or an S.
Further, an asbestos heat preservation layer is paved on the inner side wall of the heating furnace unit 2, and a heating resistance wire is arranged between the inner side wall of the heating furnace unit 2 and the asbestos heat preservation layer.
Further, heat preservation covers are arranged at the positions of the feed inlet 2-1 and the discharge outlet 2-2 of the heating furnace unit 2.
Further, the first helmholtz coil set 4 and the second helmholtz coil set 5 are fixedly mounted on the inner side wall of the heating furnace unit 2 through brackets, respectively, and the first helmholtz coil set 4 and the second helmholtz coil set 5 are perpendicular to each other but do not intersect.
Further, an air outlet is arranged on the top surface of the cooling device, and a cooling water outlet is arranged at the bottom of the side wall of the cooling device.
Further, the temperature and flow of cooling water in the water cooling zone I and the air outlet speed and temperature of the air outlet array 9 in the air cooling zone II are adjusted according to the cooling process parameters of the amorphous alloy ribbon 6, and the cooling rates of the water cooling zone I and the air cooling zone II are not more than 10 ℃/s.
Further, first speed sensors are respectively arranged at the positions of the unreeling device 1 and the reeling device 15, the unreeling device 1, the reeling device 15 and the first speed sensors are respectively and electrically connected with a PLC, and the PLC controls the rotating speeds of the unreeling device 1 and the reeling device 15 to be different according to feedback signals of the first speed sensors;
the temperature sensors are respectively arranged in the heating furnace units 2, the temperature sensors and temperature control buttons of the heating furnace units 2 are respectively and electrically connected with a PLC, and the PLC independently adjusts the heating temperature of each heating furnace unit 2 in real time according to annealing process parameters of the amorphous alloy thin strip 6 and feedback signals of the temperature sensors;
in the same heating furnace unit 2, a second speed sensor is arranged at the position of the feeding roller 3, a first tension sensor is arranged at the position of the tension fine adjustment roller 7, the feeding roller 3, the tension fine adjustment roller 7, the second speed sensor and the first tension sensor are respectively and electrically connected with a PLC, and the PLC adjusts the rotating speeds of the feeding roller 3 and the tension fine adjustment roller 7 in real time according to feedback signals of the second speed sensor and the first tension sensor;
in the cooling device, a second tension sensor is arranged at the position of the tension adjusting roller 10, the second tension sensor and the lifting device 16 are respectively and electrically connected with a PLC, and the PLC adjusts the position of the tension adjusting roller 10 in real time through the lifting device 16 according to the feedback signal of the second tension sensor.
Further, the lifting device 16 includes vertical columns respectively arranged on the front and rear inner side walls of the cooling device along the vertical direction, sliding grooves are respectively arranged on opposite planes of the vertical columns on the front and rear sides, screw rods are respectively arranged in the corresponding sliding grooves, a lifting motor is arranged at the lower end of the screw rods, sliding blocks are arranged on the screw rods, and the head and tail ends of the tension adjusting roller 10 are respectively fixedly arranged on the corresponding sliding blocks; the lifting motor is electrically connected with the PLC, the PLC controls the lifting motor to drive the screw rod to rotate forwards or reversely, the screw rod drives the sliding block to reciprocate along the sliding groove, and the sliding block drives the tension adjusting roller 10 to reciprocate along the upright post.
The application process of the invention is as follows:
s1, magnetic field-tension annealing: the PLC controller independently adjusts the heating temperature of each heating furnace unit 2 in real time according to the annealing process parameters of the amorphous alloy thin strip 6 and the feedback signals of the temperature sensors, and after the temperature in each heating furnace unit 2 reaches a preset temperature, the PLC controller controls the rotating speed of the unreeling device 1, and simultaneously the PLC controller controls the first Helmholtz coil group 4 and the second Helmholtz coil group 5 to start so as to apply a uniform magnetic field to the inside of the heating furnace unit 2; the unreeling device 1 unreels the amorphous alloy thin strip 6, then sends the amorphous alloy thin strip 6 into a heating furnace unit 2 positioned at the head end, a PLC (programmable logic controller) adjusts the rotating speeds of a feeding roller 3 and a tension fine adjustment roller 7 in real time according to feedback signals of a second speed sensor and a first tension sensor, and the feeding roller 3 continuously conveys the amorphous alloy thin strip 6 in the heating furnace unit 2 to finish magnetic field-tension annealing of the amorphous alloy thin strip 6;
s2, composite cooling: continuously feeding the amorphous alloy thin strip 6 into a cooling device after continuously passing through magnetic field-tension annealing of a plurality of heating furnace units 2, penetrating through a through groove on a heat insulation plate 17 and sequentially passing through a first guide roller 8, a third guide roller 12, a tension adjusting roller 10, a fourth guide roller 13 and a second guide roller 11, performing air cooling-water cooling composite cooling, wherein a PLC (programmable logic controller) adjusts the position of the tension adjusting roller 10 in real time through a lifting device 16 according to a feedback signal of a second tension sensor in the cooling process, and then adjusts the tension of the amorphous alloy thin strip 6 in a cooling section, and the cooled amorphous alloy thin strip 6 is conveyed to the outside of the cooling device through a conveying roller 14;
s3, the amorphous alloy thin strip 6 is coiled into a coil through a coiling device 15 after being sent out by a cooling device.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a capsule formula tension-magnetic field coupling annealing stove based on helmholtz coil, includes unreeling device (1), heating furnace unit (2), first helmholtz coil group (4), second helmholtz coil group (5), coiling mechanism (15) and cooling device, its characterized in that:
the heating furnace unit (2) is of a hollow spherical cover body structure, a feed inlet (2-1) and a discharge outlet (2-2) are respectively arranged at two ends of any diameter of the cover body, the discharge outlet (2-2) of the former heating furnace unit (2) is communicated with the feed inlet (2-1) of the latter heating furnace unit (2), the unreeled amorphous alloy thin strip (6) is fed into the heating furnace unit (2) at the head end by the unreeler (1), and is fed into the cooler after passing through a plurality of heating furnace units (2) in sequence, and the amorphous alloy thin strip (6) is coiled into a coil by the coiling device (15) after being fed out by the cooler;
in the heating furnace unit (2), a feed roller (3) is arranged at one side of a feed inlet (2-1), a tension fine adjustment roller (7) is arranged at one side of a discharge outlet (2-2), an amorphous alloy thin strip (6) is fed into the heating furnace unit (2) through the feed roller (3), and then is fed out of the heating furnace unit (2) through the tension fine adjustment roller (7); the first Helmholtz coil group (4) and the second Helmholtz coil group (5) are respectively composed of two pairs of Helmholtz coils which are arranged in parallel along the vertical direction, wherein the Helmholtz coils which are oppositely arranged in the first Helmholtz coil group (4) are respectively arranged at the head end and the tail end of an amorphous alloy thin strip (6) in the heating furnace unit (2), and the magnetic field direction formed by the first Helmholtz coil group (4) is parallel to the length direction of the strip; the Helmholtz coils oppositely arranged in the second Helmholtz coil group (5) are respectively arranged at the front side and the rear side of the amorphous alloy thin strip (6) in the heating furnace unit (2), and the magnetic field direction formed by the second Helmholtz coil group (5) is parallel to the width direction of the strip;
the lower part of the cooling device is provided with a water cooling area (I), the upper part of the cooling device is provided with an air cooling area (II), a heat insulation board (17) is arranged at the interface position of the juncture of the water cooling area (I) and the air cooling area (II), a plurality of through grooves for the amorphous alloy thin strip (6) to pass through are arranged on the heat insulation board (17), and an air blowing port array (9) is arranged on the side wall of part of the cooling device in the air cooling area (II); a third guide roller (12) and a fourth guide roller (13) are arranged in the water cooling area (I), a first guide roller (8), a second guide roller (11) and a conveying roller (14) are arranged in the air cooling area (II), a tension adjusting roller (10) is arranged between the first guide roller (8) and the second guide roller (11), the head end and the tail end of the tension adjusting roller (10) are arranged on a lifting device (16), the lifting device (16) drives the tension adjusting roller (10) to reciprocate up and down, and the tension of an amorphous alloy thin strip (6) in the cooling device in a cooling stage is adjusted through the tension adjusting roller (10); the amorphous alloy thin strip (6) penetrates through a through groove on the heat insulation plate (17) in the cooling device and sequentially passes through the first guide roller (8), the third guide roller (12), the tension adjusting roller (10), the fourth guide roller (13) and the second guide roller (11), and the cooled amorphous alloy thin strip (6) is conveyed to the outside of the cooling device through the conveying roller (14).
2. A capsule tensile-magnetic field coupled annealing furnace based on helmholtz coils according to claim 1, characterized in that: the tension-magnetic field coupling annealing furnace comprises at least two heating furnace units (2), and the heating furnace units (2) are sequentially arranged in a shape like a Chinese character 'Yi' or a shape like a Chinese character 'S'.
3. A capsule tensile-magnetic field coupled annealing furnace based on helmholtz coils according to claim 1 or 2, characterized in that: an asbestos heat preservation layer is paved on the inner side wall of the heating furnace unit (2), and a heating resistance wire is arranged between the inner side wall of the heating furnace unit (2) and the asbestos heat preservation layer.
4. A capsule tensile-magnetic field coupled annealing furnace based on helmholtz coils according to claim 1 or 2, characterized in that: and heat preservation covers are arranged at the positions of the feed inlet (2-1) and the discharge outlet (2-2) of the heating furnace unit (2).
5. A capsule tensile-magnetic field coupled annealing furnace based on helmholtz coils according to claim 1, characterized in that: the first Helmholtz coil group (4) and the second Helmholtz coil group (5) are respectively and fixedly installed on the inner side wall of the heating furnace unit (2) through a support, and the first Helmholtz coil group (4) and the second Helmholtz coil group (5) are perpendicular to each other but are not intersected.
6. A capsule tensile-magnetic field coupled annealing furnace based on helmholtz coils according to claim 1, characterized in that: an air outlet is arranged on the top surface of the cooling device, and a cooling water outlet is arranged at the bottom of the side wall of the cooling device.
7. A capsule tensile-magnetic field coupled annealing furnace based on helmholtz coils according to claim 1, characterized in that: according to the cooling technological parameters of the amorphous alloy ribbon (6), the temperature and flow of cooling water in the water cooling zone (I) and the air outlet speed and temperature of the air outlet array (9) in the air cooling zone (II) are adjusted, and the cooling rates of the water cooling zone (I) and the air cooling zone (II) are not more than 10 ℃/s.
8. A capsule tensile-magnetic field coupled annealing furnace based on helmholtz coils according to claim 1, characterized in that:
the unreeling device (1) and the reeling device (15) are respectively provided with a first speed sensor, the unreeling device (1), the reeling device (15) and the first speed sensors are respectively and electrically connected with a PLC (programmable logic controller), and the PLC controls the rotating speeds of the unreeling device (1) and the reeling device (15) to be different according to feedback signals of the first speed sensors;
the temperature sensors are respectively arranged in the heating furnace units (2), the temperature sensors and temperature control buttons of the heating furnace units (2) are respectively and electrically connected with the PLC, and the PLC independently adjusts the heating temperature of each heating furnace unit (2) in real time according to annealing process parameters of the amorphous alloy thin strip (6) and feedback signals of the temperature sensors;
in the same heating furnace unit (2), a second speed sensor is arranged at the position of the feeding roller (3), a first tension sensor is arranged at the position of the tension fine adjustment roller (7), the feeding roller (3), the tension fine adjustment roller (7) and the second speed sensor and the first tension sensor are respectively electrically connected with a PLC, and the PLC adjusts the rotating speeds of the feeding roller (3) and the tension fine adjustment roller (7) in real time according to feedback signals of the second speed sensor and the first tension sensor;
in the cooling device, a second tension sensor is arranged at the position of the tension adjusting roller (10), the second tension sensor and the lifting device (16) are respectively and electrically connected with a PLC, and the PLC adjusts the position of the tension adjusting roller (10) in real time through the lifting device (16) according to a feedback signal of the second tension sensor.
9. A capsule tensile-magnetic field coupled annealing furnace based on helmholtz coils according to claim 1 or 8, characterized in that: the lifting device (16) comprises upright posts which are respectively arranged on the front inner side wall and the rear inner side wall of the cooling device along the vertical direction, sliding grooves are respectively arranged on the opposite planes of the upright posts on the front side and the rear side, the screw rods are respectively arranged in the corresponding sliding grooves, the lower ends of the screw rods are provided with lifting motors, the screw rods are provided with sliding blocks, and the head end and the tail end of the tension adjusting roller (10) are respectively fixedly arranged on the corresponding sliding blocks; the lifting motor is electrically connected with the PLC, the PLC controls the lifting motor to drive the screw rod to rotate forwards or reversely, the screw rod drives the sliding block to reciprocate along the sliding groove, and the sliding block drives the tension adjusting roller (10) to reciprocate along the upright post.
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| CN117305573B (en) | 2024-02-02 |
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